662 



H. GRAHAM CANNON 



b}^ Doncaster and Cannon (3) all the Oolpfi apparatus is taken up 

 in the formation of the acrosome ', This statement might pass 



Text-fig. 1. 



Diagram illustrating the spermatogenesis of lice, a., acroblast. 

 ^4.. acrosome. ;«., mitochondria. J/., mitosonie. ilf r., mitosome 

 I'emnant. nl., nucleolus. 



without comment were it not that it is grossly inaccurate. 

 We stated ' we have been unable to determine ^nth certainty 

 either the origin or the nature of the " acroblast '', but on the 

 analogy of the bodies in Lepidoptera, which Gatenby calls by 



I 



